Mechanically held inner knives of shearheads outside said heads on electrical and mechanical shavers

ABSTRACT

This disclosure relates to a razor having means to aid in cleaning the cutting blades or knives without completely removing them from the razor. The inner cutting blades are slidably mounted within a shearhead in such a manner that they can be moved to a position substantially without said shearhead but attached thereto to expose such blades for cleaning purposes.

Write Mobile-r 5] y 23, B972 [54] MEG [56] References Cited OF S lUNITEDSTATESPATENTS r 1 a; 1 2 :1 $53 EQCAL 2,973,574 4/1961 Kobler......30/43.92 3,103,744 9/1963 Kobler ..30 43.92 x

[72] Inventor: Paul Kobler, Lynbrook, NY. 11563 Filed: Nov. 1968 PrzmaryExammer-Othell M.S1mpson [2]] App]. No.: 785,842

[52] US. Cl ..30/41 [51] Int. Cl ..B26b 19/38 [57] ABSTRACT Thisdisclosure relates to a razor having means to aid in cleaning thecutting blades or knives without completely removing them from therazor. The inner cutting blades are slidably mounted within a shearheadin such a manner that they can be moved to a position substantiallywithout said shearhead but attached thereto to expose such blades forcleaning purposes.

5 Claims, 5 Drawing Figures Patented May 23, 1972- 3,664,019

PAUL KOBLER I N VEN TOR.

MECHANICALLY HELD INNER KNIVES OF SHEARHEADS OUTSIDE SAID HEADS ONELECTRICAL AND MECHANICAL SHAVERS The present invention relates tomechanical means to hold the inner knives of shavers outside the outershearhead member for convenient cleaning of said knives. Such shearheadscomprise a hollow outer member with a cutting surface and an innercutter member located within said outer member and movable relativethereto. More particularly this invention relates to shearheads of thekind in which the outer hollow cutting member, which may be straight orcurved in longitudinal profile, has the inner cutting knife reciprocallymoving back and forth in the outer hollow cutting head. It is known thatthe inner cutting knives can be best cleaned and also the outer cuttinghead, when the inner knives are removed from the outer cutting head. Todo this it is necessary to release first the pin 7, which moves theshearhead knife back and forth. When the inner knife is outside theouter cutting head, said knife has to be supported, preferably on bothends, in order to have said knife in a convenient cleaning position andto be able to bring 'it back into the outer cutting member very quickly,without holding each knife by hand.

These are the objects of my invention. Other objects and advantages ofthe invention will be become apparent from the description now to followof a prefered embodiment thereof, in which reference will be had to theaccompanying drawing in which FIG. 1 is a front view of said device.

FIG. 2 is a detail of a part in FIG. 1 which releases and locks thedriving pin 7.

FIG. 3 refers to the similar FIG. 1, with the inner cutter knife takenout of the hollow shearhead member.

FIG. 4 is another embodiment of this invention, in front view designedfor longer shearheads.

FIG. Sis a side view of FIG. 3.

As shown in FIG. 1, 3 and 4, a shearhead 5 is attached to a shavercasing 28. The shearhead 5 has an inner cutting knife 20. FIG. 1, 3 and4 show the inner knife with dotted lines inside the outer cutting memberand how it can be moved, seen in FIG. 3 and 4 from the inside positionof the shearhead to an outside position, outside of said shearhead. Itshould be understood that the shaver casing may also support a pluralityof shearheads.

In FIG. 1 a shearhead is mounted on the shaver casing 28. The innercutting knife 20 is seen with dotted lines inside the outer shearheadmember. Said inner cutter knife 20 has at its base, in the middle anopening. In said opening the driving pin is pressed with its top byspring 4 S. Spring 4 S pushes up a shoulder 4 C which is part ofthedriving pin 25. When the handwheel 4, which is outside the shavercasing, 28, is turned clockwise, bolt 4 A on said handwheel pushes downsaid shoulder 4 C and with it pushes down the driving pin 25 and out ofengagement with the inner cutter knife 20.

When the wheel 4 is with its bolt 4 A vertically directly under the axisof wheel 4, the driving pin 25 is locked in its position.

In FIG. 2 we see in a side view knob 4, as also seen in FIG. 1. On thisknob 4 is bolt 4 A which in FIG. 1 pushes down and out of engagementwith the inner cutter knife the driving pin FIG. 3 is a front viewsimilar to FIG. 1, with the inner cutter knife taken out of the hollowshearhead member. We see also slide 19 supporting the inner cutter knife20 in its position outside the hollow shearhead member. On the drawn outslide 19 is at its right end attached a haircatcher 21. On the hollowshearhead member such a haircatcher 21 A is attached with a hinge.

FIG. 4 is a front view of the same invention designed for longershearheads. We also see that the inner end of slide 19 has a nose 24which touches, when the slide 19 is in its outside position, stop 23 andprevents slide 19 from falling out of the outer shearhead member 5, whenthe slide 19 is pulled out completely. Number 21 B is again ahaircatcher also 21 A and number 26 denotes a handle with which slide 19is pulled out of shearhead member 5.

Slide 19 carries in FIG. 4 a standard size inner knife 20.

However, the slide 19 is considerably longer, so it will carry alsolonger shearheads.

FIG. Sis a sectional view of FIG. 1, 3 and 4. We see slide 19 inside theouter shearhead member 5. We also see a supporting rod 27, which willslide out with the slide 19 and hold its end rigidly in position. Such asupporting rod member 27 may be attached to the slide 19 on one or bothsides. FIG. 5 shows such a rod 27 on both sides of slide 19. However ifa tough material like stainless steel is used to make slide 19, theabove mentioned rod 27 may be eliminated.

Not shown in the drawings is how lever 25 A is oscillating. Oscillatingis also driving pin 25 which is solidly attached to lever 25 A. Andlever 25 A is oscillated by a cam which is mounted on the motor shaft.

In operation the great advantage with these constructions is, that knife20, when it is outside hollow shearhead member 5 and cleaned by handwith a brush, can be pushed back into members very quickly andaccurately by pushing slide 19 back to its original position. It isunderstood that the construction for flat, curved or shearheads arrangedin an angle towards each other, may be a little different, however thethought of the invention remains the same. This invention is especiallyuseful for shavers with a plurality of shearheads. It is much easier toclean a plurality of inner knives 20, when they are in a convenientcleaning position outside member 5, than to take each knife separatelyout of the shearheads by hand. Also one stroke of the cleaning brush cango over a plurality of knives and clean them much faster. Also thebringing back of all knives into the outer hollow shearhead members willsave much time. For instance with a Triplex shaver with three heads withone flip back of slide 19 all three knives are immediately inside theouter shearhead members. In other words the invention is a considerabletime saving device in the shaving operation. We have to understand thatinner knives which are not cleaned very well will not cut well.

What I claim is:

l. A mechanical shaver comprising a shearhead having a hollow outershearhead member, a reciprocating cutter positionable within said outermember for bearing against the inner cutting surface of said outermember for shaving and positionable substantially without but attachedto said outer member for cleaning said cutter, drive means for saidcutter including a retractable drive pin, means connected to said drivepin for biasing said pin into driving engagement with said cuttermember, slide means on said shearhead for said cutter to permit saidcutter to be substantially removed from said slide and said outer memberto prevent separation thereof and means for disengaging said drive pinfrom said cutter.

2. The shaver as defined in claim 1 wherein the disengaging meansincludes a handwheel, a shoulder on said drive pin, and means on saidhandwheel for engaging said shoulder to thereby move said drive pin outof engagement with said cutter upon rotation of said handwheel.

3. The shaver as defined in claim 2 wherein the means on said handwheelis a pin or the like eccentrically mounted with respect to the axis ofthe handwheel whereby, when said pin or the like is rotated to positionvertically below said axis the disengaging means becomes locked inposition.

4. The shaver as defined in claim 1 further comprising means on eachside of said shearhead to prevent the stubble for falling out of same,one of said means being attached to said slide.

5. The shaver as defined in claim 1 wherein the shape of the shearheadis generally lengthwise curved and roof shaped in cross section.

1. A mechanical shaver comprising a shearhead having a hollow outershearhead member, a reciprocating cutter positionable within said outermember for bearing against the inner cutting surface of said outermember for shaving and positionable substantially without but attachedto said outer member for cleaning said cutter, drive means for saidcutter including a retractable drive pin, means connected to said drivepin for biasing said pin into driving engagement with said cuttermember, slide means on said shearhead for said cutter to permit saidcutter to be substantially removed from said slide and said outer memberto prevent separation thereof and means for disengaging said drive pinfrom said cutter.
 2. The shaver as defined in claim 1 wherein thedisengaging means includes a handwheel, a shoulder on said drive pin,and means on said handwheel for engaging said shoulder to thereby movesaid drive pin out of engagement with said cutter upon rotation of saidhandwheel.
 3. The shaver as defined in claim 2 wherein the means on saIdhandwheel is a pin or the like eccentrically mounted with respect to theaxis of the handwheel whereby, when said pin or the like is rotated toposition vertically below said axis the disengaging means becomes lockedin position.
 4. The shaver as defined in claim 1 further comprisingmeans on each side of said shearhead to prevent the stubble for fallingout of same, one of said means being attached to said slide.
 5. Theshaver as defined in claim 1 wherein the shape of the shearhead isgenerally lengthwise curved and roof shaped in cross section.